Analysis

  • max time kernel
    124s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 01:30

General

  • Target

    a7d5d6ac4978829c537ecedfb9e8582b3db5dc2d964970b9933a68efacab5a64.exe

  • Size

    55KB

  • MD5

    70df472f39a7860d87d3f1e3f36f29e4

  • SHA1

    9a623bbf19f1def653cd2128eebe94eb7f027fa8

  • SHA256

    a7d5d6ac4978829c537ecedfb9e8582b3db5dc2d964970b9933a68efacab5a64

  • SHA512

    6132be776bfc3d533699d8d0c1886f0ef9c07220e0e2c4706071672d4bdb00f3006099140c544a01aa625bbd5093c24ffc4df14e9be79e62d2ceeb9fab51cff8

  • SSDEEP

    768:r8eRH+MlFh0pDpuJ84WEi+U6sh7iQroCHmyf+RjFBSuB2Xpfsp:r9l+W8xFt6sh7iQroCoRB0u0sp

Score
9/10
upx

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7d5d6ac4978829c537ecedfb9e8582b3db5dc2d964970b9933a68efacab5a64.exe
    "C:\Users\Admin\AppData\Local\Temp\a7d5d6ac4978829c537ecedfb9e8582b3db5dc2d964970b9933a68efacab5a64.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2796
    • C:\Users\Admin\AppData\Local\Temp\bkgrnd.exe
      "C:\Users\Admin\AppData\Local\Temp\bkgrnd.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2352

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Cab18A1.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar19E0.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • \Users\Admin\AppData\Local\Temp\bkgrnd.exe

    Filesize

    55KB

    MD5

    61c3f9ec8c31a15f0de6633b5d04daae

    SHA1

    95b8d0d8910dc8ef3aecdc3adcdd676f4cc0caa6

    SHA256

    3797df6cdb69e475846a12ab3ad1ba62a43db6c0387b47e73122c364d1a31edd

    SHA512

    e1f94269613c55cc9bb32a915b187a130e4b9bfa59c023e65d6c97da8a0dd66a1d703ac690c1007ff391faabea8012d3da615d6416d12a44ab7c1caa37d43212

  • memory/2352-12-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/2796-2-0x0000000004000000-0x0000000004006000-memory.dmp

    Filesize

    24KB

  • memory/2796-1-0x0000000004000000-0x0000000004006000-memory.dmp

    Filesize

    24KB

  • memory/2796-0-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB